Microspur stepping adjusting mechanism

Abstract

The utility model belongs to the technical field of stepping adjustment, and particularly provides a micro-distance stepping adjusting mechanism which comprises an adjusting hand wheel, an installation seat and a translation sliding block, the adjusting hand wheel and the installation seat are tightly combined through a locking nut, the translation sliding block is arranged in a square hole of the installation seat, and a screw rod of the adjusting hand wheel is matched with a threaded hole of the translation sliding block. Wherein in the rotating process of the adjusting hand wheel, the translation sliding block can be driven to slide back and forth in a square hole of the mounting seat; a plurality of ratchet teeth which are uniformly distributed are arranged on the adjusting hand wheel, a plurality of spring thimbles which are uniformly distributed are mounted on the mounting seat, every time the adjusting hand wheel rotates by a certain angle, every two adjacent spring thimbles point to the wave trough position of one ratchet tooth, and at the moment, the spring thimbles at the symmetrical positions point to the wave crest position of the other ratchet tooth. The macro stepping adjusting mechanism provided by the utility model is simple, high in durability and easy to process, has a self-locking function, and can realize high-precision stepping fine adjustment.

Description

Technical Field

[0001] This utility model relates to the field of step adjustment technology, and more specifically, to a micro-step adjustment mechanism. Background Technology

[0002] Currently, many step-by-step micro-adjustment mechanisms consist of a fine-pitch thread and a ratchet adjustment mechanism. The ratchet step adjustment and handwheel self-locking are controlled by a spring pointer. A typical application is the micro-adjustment of the target reticle on a rifle scope.

[0003] To improve the accuracy of stepper adjustment, the pitch of the fine-pitch thread is usually reduced and the number of teeth on the ratchet adjustment mechanism is increased. However, the smaller the pitch of the fine-pitch thread, the higher the requirements for machining accuracy and materials, resulting in higher processing costs. At the same time, the smaller the thread pitch, the lower the durability of the equipment, reducing its reliability. Increasing the number of teeth on the ratchet adjustment mechanism leads to a reduction in the tooth height and tooth width of the ratchet, which not only reduces the feel of the ratchet stepping but also makes the ratchet more prone to wear and failure, thus losing its self-locking adjustment function.

[0004] Therefore, there is an urgent need for a stepper fine-tuning mechanism that can increase adjustment accuracy without reducing the pitch or increasing the number of ratchet teeth in the ratchet adjustment structure. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a micro-stepping adjustment mechanism that can achieve high-precision stepping fine adjustment.

[0006] As a first aspect of this utility model, a micro-stepping adjustment mechanism is provided. The micro-stepping adjustment mechanism includes an adjusting handwheel, a mounting base, and a translation slider. The adjusting handwheel and the mounting base are tightened together by a locking nut. The translation slider is disposed in a square hole in the mounting base, and the screw of the adjusting handwheel matches the threaded hole of the translation slider. During rotation, the adjusting handwheel can drive the translation slider to slide back and forth within the square hole of the mounting base. The adjusting handwheel is provided with a plurality of evenly distributed ratchet teeth, and the mounting base is equipped with a plurality of evenly distributed spring pins. Every time the adjusting handwheel rotates by a certain angle, an adjacent spring pin points to the trough of one of the ratchet teeth, while a symmetrically positioned spring pin points to the crest of another ratchet tooth.

[0007] Furthermore, a set of planar thrust bearings is provided between the adjusting handwheel and the mounting base to make the rotation process of the adjusting handwheel smoother.

[0008] Furthermore, the end face of the translation slider is a micro-stepping control contact surface.

[0009] Furthermore, it also includes a compression spring cover mounted on the mounting base, and a compression spring is provided between the translation slider and the compression spring cover, the compression spring being always in a compressed state.

[0010] The micro-stepping adjustment mechanism provided by this utility model has the following advantages: it is suitable for equipment with high-precision stepping adjustment requirements, such as the adjustment of the reticle of a sight. The adjustment mechanism is simple, highly durable, easy to process, and has a self-locking function, and the adjustment reliability is high. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof.

[0012] Figure 1 This is an assembly drawing of the micro-stepping adjustment mechanism provided by this utility model.

[0013] In the diagram: 1-Adjusting handwheel, 2-Mounting base, 3-Planar thrust bearing, 4-Locking nut, 5-Transfer slider, 6-Compression spring, 7-Compression spring cover, 8-Spring pin. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the micro-stepping adjustment mechanism proposed according to this utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0015] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0016] This embodiment provides a micro-stepping adjustment mechanism, such as... Figure 1As shown, the micro-stepping adjustment mechanism includes an adjustment handwheel 1, a mounting base 2, and a translation slider 5. The adjustment handwheel 1 and the mounting base 2 are tightened together by a locking nut 4. The translation slider 5 is disposed in the square hole of the mounting base 2, and the screw of the adjustment handwheel 1 matches the threaded hole of the translation slider 5. During rotation, the adjustment handwheel 1 can drive the translation slider 5 to slide back and forth in the square hole of the mounting base 2. The adjustment handwheel 1 is provided with multiple evenly distributed ratchet teeth, and the mounting base 2 is equipped with multiple evenly distributed spring pins 8. Every time the adjustment handwheel 1 rotates by a certain angle, an adjacent spring pin 8 points to the trough of one of the ratchet teeth, and at this time, the symmetrically positioned spring pin 8 points to the crest of another ratchet tooth.

[0017] It should be noted that, based on the design target step adjustment accuracy, the number of spring pins 8 is set to N, and they are distributed approximately symmetrically and evenly on the mounting base 2. The spring pins 8 are used to adjust the step control when the ratchet teeth of the handwheel 1 rotate.

[0018] It should be noted that, to ensure that the translation slider 5 does not rotate when the adjustment handwheel 1 is rotated, the contact part between the translation slider 5 and the mounting base 2 is designed as a square bar and a square hole.

[0019] Preferably, the adjusting handwheel 1 can be freely rotated and adjusted; a set of planar thrust bearings 3 is provided between the adjusting handwheel 1 and the mounting base 2 to make the rotation process of the adjusting handwheel 1 smoother.

[0020] Preferably, the end face A of the translation slider 5 is a micro-stepping control contact surface. This micro-stepping control contact surface is used to contact equipment requiring high-precision stepping adjustment.

[0021] Preferably, it also includes a compression spring cover 7 mounted on the mounting base 2, and a compression spring 6 is provided between the translation slider 5 and the compression spring cover 7. The compression spring 6 is always in a compressed state, giving the translation slider 5 a leftward elastic force to eliminate the thread gap between the translation slider 5 and the adjusting handwheel 1 and improve the stepping accuracy.

[0022] It should be noted that if the end face A of the translation slider 5 generates a uniform reaction force during the use of the micro-step adjustment mechanism, the compression spring 6 and the compression spring cover 7 can be removed.

[0023] It should be noted that, to simplify the design of this micro-stepping adjustment mechanism, a snap ring groove can be directly machined on the threaded rod of the adjustment handwheel 1, and the snap ring can be used to replace the planar thrust bearing 3 and the translation slider 5.

[0024] In this embodiment, while keeping the step pitch of the handwheel 1 unchanged, adding N sets of spring pins 8 to the mounting base 2 can improve the step accuracy of the original ratchet teeth by N times, thereby achieving high-precision step fine adjustment.

[0025] In this embodiment, the micro-stepping adjustment mechanism can increase the tooth height and width of the ratchet teeth, achieving the same adjustment accuracy by increasing the number of spring pins 8. This structure can reduce the machining cost of the ratchet teeth and improve their service life.

[0026] In this embodiment, the symmetrically distributed spring pins 8 counteract the radial force generated by the adjusting handwheel 1 due to the elasticity of the spring pins 8 during the adjustment process; eliminate the friction caused by the radial force during the adjustment process of the adjusting handwheel 1, reduce the wear of the adjusting handwheel 1, and improve its service life.

[0027] The working principle of the micro-stepping adjustment mechanism provided by this utility model is as follows: Let the number of ratchet teeth be Z, and the number of spring pins 8 be... N The pitch of the adjusting handwheel 1 is P, and the included angle between each spring pin 8 is α. This ensures that for every certain angle β rotated by the adjusting handwheel 1, an adjacent spring pin 8 points exactly to the trough of one ratchet tooth, while a symmetrically positioned spring pin 8 points exactly to the crest of the other ratchet tooth. Therefore, the minimum step distance of this micro-stepping adjustment mechanism is... for:

[0028] ;

[0029] ;

[0030] α ;

[0031] According to the above formula, the step adjustment accuracy increases proportionally with the number of spring pins 8.

[0032] The micro-stepping adjustment mechanism provided by this utility model is suitable for equipment with high-precision stepping adjustment requirements, such as the adjustment of the reticle of a sight. The adjustment mechanism is simple, highly durable, easy to process, and has a self-locking function, with high adjustment reliability.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A macro step adjustment mechanism characterized by, The micro-distance step adjusting mechanism comprises an adjusting hand wheel (1), a mounting seat (2) and a translation slide block (5), the adjusting hand wheel (1) is fastened with the mounting seat (2) through a locking nut (4), the translation slide block (5) is arranged in a square hole of the mounting seat (2), and a screw rod of the adjusting hand wheel (1) is matched with a threaded hole of the translation slide block (5); wherein, the adjusting hand wheel (1) can drive the translation slide block (5) to slide back and forth in the square hole of the mounting seat (2) in a rotating process; a plurality of evenly distributed ratchet teeth are arranged on the adjusting hand wheel (1), a plurality of evenly distributed spring needles (8) are mounted on the mounting seat (2), and each rotation of the adjusting hand wheel (1) by a certain angle is matched with the pointing of an adjacent spring needle (8) to a trough position of one of the ratchet teeth, at this time, the spring needles (8) at the symmetrical positions point to the peak positions of the other ratchet teeth.

2. A macro step adjustment mechanism according to claim 1, wherein A set of plane thrust bearings (3) are arranged between the adjusting hand wheel (1) and the mounting seat (2), so that the rotating process of the adjusting hand wheel (1) is smoother.

3. A macro step adjustment mechanism according to claim 1, wherein An end surface of the translation slide block (5) is a micro-distance step control contact surface.

4. A macro step adjustment mechanism according to claim 1, wherein A compression spring cover (7) is mounted on the mounting seat (2), a compression spring (6) is arranged between the translation slide block (5) and the compression spring cover (7), and the compression spring (6) is always in a compressed state.

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